Finding the Fourth Proportional to 82,728,029.88, 123,975,893.25 and 65,379,958.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,728,029.88 : 123,975,893.25 = 65,379,958.56 : x
2. Step 2: Convert to fraction form
   82,728,029.88/123,975,893.25 = 65,379,958.56/x
3. Step 3: Cross multiply
   82,728,029.88x = 123,975,893.25 × 65,379,958.56
4. Step 4: Simplify right side
   82,728,029.88x = 8,105,538,763,123,984
5. Step 5: Solve for x
   x = 8,105,538,763,123,984/82,728,029.88
6. Step 6: Final answer
   x = 97,978,143.26